Belkin F5D8231-4 N1
The comments below apply to revision 1 of this router. The revision two of this board appears (unconfirmed) much more like to the Netgear WNR854 and Airlink AR625W.
The hardware in this router is almost identical to the Gateworks/Avila boards (same processor and ethernet hardware), and support for that should work on this board with only minor changes.
Serial Port
This is a Marvell board, and its serial pins are identical to the OpenWrtDocs/Hardware/Airlink101/AR525W.
Serial connection parameters are : 112500,8N1
Linux
This is one of the first routers to run Linux 2.6 out of the box. This has Linux 2.6.10 with IXP patches (which has full support in Kamikaze), using uClibc 0.98, using uboot as the bootloader. The Atheros N wifi card is supported by MadWifi (possibly a modified version).
Boot log:
Linux version 2.6.10_dev-ixdp42x-arm_xscale_be (tom@localhost) (gcc version 3.4.3 (MontaVista 3.4.3-25
.0.30.0501131 2005-07-23)) #58 Mon May 22 04:52:54 EDT 2006
CPU: XScale-IXP42x Family [690541d1] revision 1 (ARMv5TE)
CPU0: D VIVT undefined 5 cache
CPU0: I cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
CPU0: D cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
Machine: ADI Engineering Coyote
Memory policy: ECC disabled, Data cache writeback
On node 0 totalpages: 8192
DMA zone: 8192 pages, LIFO batch:2
Normal zone: 0 pages, LIFO batch:1
HighMem zone: 0 pages, LIFO batch:1
Built 1 zonelists
Kernel command line: console=ttyS0,115200 root=/dev/mtdblock2 noinitrd mem=32M@0x0
PID hash table entries: 256 (order: 8, 4096 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 32MB = 32MB total
Memory: 30208KB available (1614K code, 302K data, 284K init)
Calibrating delay loop... 399.76 BogoMIPS (lpj=1998848)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
CPU: Testing write buffer coherency: ok
spawn_desched_task(00000000)
desched cpu_callback 3/00000000
ksoftirqd started up.
desched cpu_callback 2/00000000
desched thread 0 started up.
NET: Registered protocol family 16
PCI: IXP4xx is host
PCI: IXP4xx Using direct access for memory space
PCI: bus0: Fast back to back transfers enabled
dmabounce: registered device 0000:00:01.0 on pci bus
NetWinder Floating Point Emulator V0.97 (double precision)
Squashfs 2.2-r2 (released 2005/09/08) (C) 2002-2005 Phillip Lougher
devfs: 2004-01-31 Richard Gooch (rgooch@atnf.csiro.au)
devfs: boot_options: 0x1
Initializing Cryptographic API
IXP4xx Watchdog Timer: heartbeat 60 sec
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
ttyS0 at MMIO 0xc8001000 (irq = 13) is a XScale
io scheduler noop registered
loop: loaded (max 8 devices)
PPP generic driver version 2.4.2
PPP Deflate Compression module registered
NET: Registered protocol family 24
elevator: using noop as default io scheduler
IXP4XX-Flash0: Found 1 x16 devices at 0x0 in 16-bit bank
Amd/Fujitsu Extended Query Table at 0x0040
number of CFI chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
RedBoot partition parsing not available
cmdlinepart partition parsing not available
Using static MTD partitions.
Creating 6 MTD partitions on "IXP4XX-Flash0":
0x00000000-0x00040000 : "redboot"
0x00040000-0x003a0000 : "kernel"
0x00160000-0x003a0000 : "romfs"
0x003a0000-0x003c0000 : "nvram"
0x003c0000-0x003e0000 : "rbconf"
0x003e0000-0x00400000 : "rbfis"
u32 classifier
OLD policer on
NET: Registered protocol family 2
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 2048 bind 4096)
IPv4 over IPv4 tunneling driver
GRE over IPv4 tunneling driver
ip_conntrack version 2.1 (131072 buckets, 131072 max) - 260 bytes per conntrack
ip_tables: (C) 2000-2002 Netfilter core team
NET: Registered protocol family 1
NET: Registered protocol family 17
VFS: Mounted root (squashfs filesystem) readonly.
Mounted devfs on /dev
Freeing init memory: 284K
gpio_pin: module license 'unspecified' taints kernel.
ixp400: Module init.
ixp400_eth: Initializing IXP400 NPE Ethernet driver software v. 1.4A
ixp400_eth: CPU clock speed (approx) = 399 MHz
[warning] Warning: the NPE A component you specified does not exist
ixEthMiiPhyId[0]=02430d80
ixEthMiiPhyId[1]=02430d80
ixEthMiiPhyId[2]=02430d80
ixEthMiiPhyId[3]=02430d80
ixEthMiiPhyId[4]=02430d80
ixEthMiiPhyId[5]=31003100
[error] ixEthMiiPhyScan : unexpected Mii PHY ID 31003100
ixp400_eth: ixp0 is using NPEB and the PHY at address 0
ixp400_eth: ixp1 is using NPEC and the PHY at address 4
ixp400_eth: Use default MAC address 00:02:b3:01:01:01 for port 0
ixp400_eth: Use default MAC address 00:02:b3:02:02:02 for port 1
Sources
http://www.belkin.com/uk/support/article/?lid=enu&pid=F5D8231-uk4&aid=9126&scid=0